Board Thread:Pokémon Help/@comment-73.136.48.223-20160424041117/@comment-27248965-20161015013458

Yep, the fortune cookie reward attached with the Magik Sushi tray in New Sushi Stick has a rare chance of giving out Prism Scale. Hint: Save beforehand. If you don't get Prism Scale, you can just rejoin without saving.